<template>
	<el-container>
		<el-header class="el-header">
			<div>
				<img src="@/assets/heima.png">
				<span>电商后台管理系统</span>
			</div>
			<el-button type="info" @click="logout">退出</el-button>
		</el-header>
		<el-container class="el-container">
			<el-aside :width="isCollapse ? '64px': '200px'" class="el-aside">
				<div class="toggle-button" @click="toggle">|||</div>
				<el-menu :default-active="activePath" :router="true" :collapse-transition="false" :collapse="isCollapse" unique-opened background-color="#333744" text-color="#fff" active-text-color="#409eff">
					<el-submenu :index="item.id +''" v-for="item in menulist" :key="item.id">
						<template slot="title">
							<i :class="iconsList[item.id]"></i>
							<span>{{item.authName}}</span>
						</template>
						<el-menu-item @click="saveNavState(subItem.path)":index="subItem.path" v-for="subItem in item.children" :key="subItem.id">
							<template slot="title">
								<i class="el-icon-menu"></i>
								<span>{{subItem.authName}}</span>
							</template>
						</el-menu-item>
					</el-submenu>
				</el-menu>
			</el-aside>
			<el-main class="el-main">
				<router-view></router-view>
			</el-main>
		</el-container>
	</el-container>
</template>


<script>
	export default {
		data() {
			return {
				menulist: [],
				iconsList: {
					'125' : 'iconfont icon-user',
					'103' : 'iconfont icon-tijikongjian',
					'101' : 'iconfont icon-shangpin',
					'102' : 'iconfont icon-danju',
					'145' : 'iconfont icon-baobiao'
				},
				isCollapse: false,
				activePath: ''
			}
		},
		
		created() {
			this.getMenuList()
			this.activePath = window.sessionStorage.getItem('activePath')
		},
		
		methods: {
			logout() {
				window.sessionStorage.clear()
				this.$router.push('/login')
			},
			async getMenuList() {
				const {data: res} = await this.$request.get('menus')
				if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
				this.menulist = res.data
			},
			toggle() {
				this.isCollapse = !this.isCollapse
			},
			saveNavState(activePath) {
				window.sessionStorage.setItem('activePath', activePath)
				this.activePath = activePath
			}
		},
	}
</script>

<style lang="less" scoped>
	.el-header {
		background-color: #373d41;
		display: flex;
		justify-content: space-between;
		padding-left: 0;
		align-items: center;
		color: #fff;
		font-size: 20px;

		div {
			display: flex;
			align-items: center;

			span {
				margin-left: 15px;
			}
		}
	}

	.el-container {
		height: 100%;
	}

	.el-aside {
		background-color: #333744;
		
		.el-menu {
			border-right: none;
		}
	}

	.el-main {
		background-color: #eaedf1;
	}
	
	.iconfont {
		margin-right: 10px;
	}
	
	.toggle-button {
		background-color: #4a5064;
		font-size: 10px;
		line-height: 24px;
		color: #fff;
		text-align: center;
		letter-spacing: .3em;
	}
</style>
